Downgrading softDevice from S132 v 5 to S112 v 6

[yes]

Our device is implemented as BLE peripheral device and based on nRF52832

For saving space in Flash memory we try to downgrade SD version from S132 v 5.0 to S112 v 6.1.0

We use SDK version 14.2

SW compilation succeed but when we try to upload it to device we got error message right after download success (see below)

Preparing target for download
Executing script TargetInterface.resetAndStop()
Reset: Halt core after reset via DEMCR.VC_CORERESET.
Reset: Reset device via AIRCR.SYSRESETREQ.
Downloading ‘s112_nrf52_6.1.0_softdevice.hex’ to J-Link
Programming 2.3 KB of addresses 00000000 — 00000967
Programming 94.8 KB of addresses 00001000 — 00018b93
J-Link: Flash download: Bank 0 @ 0x00000000: Skipped. Contents already match
Download successful
Downloading ‘Injector.elf’ to J-Link
Programming 204.5 KB of addresses 00023000 — 00056257
Programming 0.0 KB of addresses 00056258 — 0005627f
Programming 32.2 KB of .rodata addresses 00056280 — 0005e36f
Programming 0.2 KB of addresses 0005e370 — 0005e46f
J-Link: Flash download: Bank 0 @ 0x00000000: Skipped. Contents already match
Download successful
Stopped by vector catch

Moreover,  downgrade doesn't seems to save Flash memory space  

Any suggestions?

Thanks in advance

[Vidar Berg]

Hi,

SDK version 14.2 uses softdevice API version 5.x.x, and is therefore not compatible with s112 v.6.1.0. The memory layout will also need to adjusted in your linker configuration to correspond with the new softdevice size. I would recommend to use SDK 15 instead, if possible? 

Release notes s112 v.6.1.0

s112_nrf52_6.1.0_release-notes.pdf

Migration document s112 v6.1.0 (from version 5.x.x)

s112_nrf52_6.1.0_migration-document.pdf